evaluation of the free flow medical lung tensioning device system for the treatment of severe emphysema

Conditions: Emphysema or COPD

Summary: patients with severe emphysema have limited options for treatment. current treatments include lung transplant, lung volume reduction surgery or endobronchial lung volume reduction using valves or coils. these options are only available for a small and selected group of patients. the free flow medical lung tensioning device system (ltd) is thought to be the next generation endobronchial treatment for patients with severe emphysema designed to address this unmet need. the ltd is designed to compress the areas of lung parenchyma most damaged by emphysema and to tension surrounding tissue to help restore lung elastic recoil in a similar manner to the lung volume reduction coils.


Eligibility criteria:
inclusion criteria: 1. diagnosis of copd 2. fev1/fvc ≤ 70% 3. ≥ 40 years of age 4. post-bronchodilator fev1 ≤ 45% of predicted 5. total lung capacity \> 100% of predicted 6. residual volume (rv) \> 175% of predicted 7. rv/tlc \> 55% 8. marked dyspnea defined by a score of ≥ 2 on mmrc dyspnea scale of 0-4 9. emphysema with ≥ 20% destruction (on -950 hounsfield units) of two potential treatment lobe(s) 10. stopped smoking for ≥ 6 months prior to entering the study 11. completed a pulmonary rehabilitation program prior to entering the study and/or have regular (at least once a week) physiotherapy 12. ability to read, understand and sign the informed consent form exclusion criteria: 1. history of recurrent clinically significant respiratory infections and/or copd exacerbations, defined as ≥ 2 hospitalizations for respiratory infections and/or copd exacerbations during the year prior to enrolment 2. history of recurrent clinically significant respiratory infections and/or copd exacerbations, defined as ≥ 3 courses of prednisolone and/or antibiotics for respiratory infections and/or copd exacerbations during the year prior to enrolment 3. clinically significant bronchiectasis 4. severe gas exchange abnormalities defined by paco2 \> 7.0 kpa (52 mmhg) and/or pao2 \< 7.0 kpa (52 mmhg) (measured on room air) 5. ≥ 10 mg prednisone (or equivalent dose of other corticosteroids) daily 6. inability to walk \> 140 meters in 6 minutes 7. known pulmonary hypertension defined by right ventricular systolic pressure \> 45 mmhg and/or evidence of pulmonary hypertension of right ventricular failure on echocardiogram 8. significant paraseptal emphysema 9. giant bullae (\>1/3 of lung volume) 10. medical history of asthma 11. underwent previous lvrs, lobectomy, pneumonectomy or lung transplant 12. underwent previous treatment with thermal vapor ablation, aeriseal, cryospray, endobronchial coils or endobronchial valves (if still implanted) 13. evidence of other disease(s) that have a predicted survival of less than one year 14. inability to tolerate bronchoscopy under general anaesthesia 15. maintenance antiplatelet (except aspirin/ascal) or anticoagulant therapy (such as warfarin, coumadin, heparin, lmwh, doacs, etc) which cannot be permanently stopped prior to entering the study 16. pregnant, lactating or plans to become pregnant within the study timeframe 17. known sensitivity to drugs required to perform bronchoscopy under general anaesthesia 18. any other disease, condition(s) or habit(s) that would interfere with completion of study and follow up assessments, would increase risks of bronchoscopy or assessments or in the judgment of the investigator would potentially interfere 19. known nickel, titanium, or nitinol allergy

Keywords: lung volume reduction nitinol device